Ideal for drilling in wood, metal or plastic. 135 Split point starts on contact and minimizes bit walking on surface. Gold oxide coating resists heat build-up and lengthens bit life. For use in both corded and cordless drills.
I don't use them in an industrial setting but as a DIYer this bit index works fine for me. I need some accuracy and these bits are exhausted. There were no problems and the price was right!
We have a few of these at work and I liked them so much I had to seek them out and buy a set for home use. It wasn't easy because there was no word "skill" in the index of exercises, but I persevered and found it. I drilled a rigid 10-32 shoulder bolt and wrench after normalizing. This dulled the drill and I had to resharpen it, but it worked. Just keep them cool.
Pros
Gold oxide coating prevents heat build up and extends bit life